Frasier, Season 6

Frasier:
I can't believe you're being so casual about this. You realise your asking me to do something entirely unethical?

Martin:
Oh for God's sake. Nobody's even going to know!

Frasier:
That's the point! Ethics are what we do when no-one else is looking. For heaven's sake I learned that from you. Are you saying you wouldn't have any trouble with this?

Martin:
Let me tell you something. One time when I was on the force I saw a guy shoot somebody. When we caught him I started to read him his rights. But he slipped out of his cuffs and he swung at me so I didn't have a chance to finish. Two months later, I'm on the stand and his lawyer asks me if I read him his rights in full. Now, if I say no, this guy walks. And this guy's been in and out of jail all his life; he could have read me his rights. So I say "Yes, I did, I read them in full." I lied under oath. Now you might think I did an unethical thing but there's not a doubt in my mind that I did the right thing.